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Finding the Fourth Proportional to 447,264.32, 669,288.48 and 328,640.96

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Solution

The fourth proportional to 447,264.32, 669,288.48 and 328,640.96 is: 491,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,264.32 : 669,288.48 = 328,640.96 : x
  2. Step 2: Convert to fraction form
    447,264.32/669,288.48 = 328,640.96/x
  3. Step 3: Cross multiply
    447,264.32x = 669,288.48 × 328,640.96
  4. Step 4: Simplify right side
    447,264.32x = 219,955,608,584.14
  5. Step 5: Solve for x
    x = 219,955,608,584.14/447,264.32
  6. Step 6: Final answer
    x = 491,779.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.